Questions tagged [dual-boot]

For questions regarding the installation of two or more operating systems on a single computer.

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558
votes
12answers
1.8m views

How do I install Ubuntu alongside a pre-installed Windows with UEFI?

I'm absolutely new to Linux. I would like to know how to install Ubuntu alongside the pre-installed Windows 8+ OS. Should I do it with Wubi, or through the Live USB/DVD? What steps do I need to take ...
346
votes
13answers
736k views

How can I repair grub? (How to get Ubuntu back after installing Windows?)

I installed Windows 7, which ate Ubuntu's boot file. When starting up the computer, it now goes straight to Windows, without giving me the option of booting Ubuntu. How can I get Ubuntu back?
314
votes
4answers
309k views

Clock time is off on dual boot

Dual boot system Windows XP Pro and Ubuntu 12.04. I have the bios set for the correct time and Ubuntu set for US Eastern time. Ubuntu will boot up and the time will be off by -4 hours. If I correct ...
230
votes
16answers
682k views

How can I install Windows after I've installed Ubuntu?

I have Ubuntu on my laptop. Now I want install Windows 7 in a dual-boot. How can I do this? I can't lose my Ubuntu files, and I'm afraid that I might break GRUB. Go here for UEFI only!
201
votes
8answers
647k views

How do I set the grub timeout and the grub default boot entry?

In Ubuntu 12.04 (or above), how do I set the GRUB time and the default OS (that I see at boot time) as I'm dual-booting Windows (7/8) and Ubuntu (12.04 or above)?
110
votes
6answers
537k views

How to get GRUB to be the default bootloader instead of Windows Boot Manager on a UEFI laptop?

I've got an HP Pavilion Touchsmart notebook that came with Windows 8. I've upgraded to 8.1, and now I want to dual-boot an Ubuntu distribution with Windows 10. When dual-booting with Windows 8.1, the ...
110
votes
11answers
165k views

How to automount NTFS partitions?

I have two NTFS partitions, and I don't want to mount them manually every-time I start Ubuntu. How can I do this? Is there a tool or a code to use? If so, is it safe to automount? specially when ...
106
votes
4answers
135k views

How to get grub2 to remember last choice?

Grub2 - Community Ubuntu Documentation says the following: Saving an OS can be achieved by running sudo grub-set-default if DEFAULT=saved is set in /etc/default/grub. It may also be saved if ...
89
votes
11answers
695k views

Uninstall Grub and use Windows bootloader

I have Windows 8 pre-installed and then installed Grub with Ubuntu. Ubuntu is not my thing so now I want to remove it along with grub. From what I have learned, with UEFI, Grub does not overwrite the ...
84
votes
13answers
284k views

Windows 10 upgrade kills grub and boot-repair doesn't help

I've just upgraded to Windows 10 from Windows 8.1 on my partitioned laptop that has Ubuntu 14.04 installed. Grub no longer appeared on boot so I ran boot-repair from an Ubuntu liveUSB. This didn't ...
77
votes
5answers
243k views

Windows 10 upgrade led to grub rescue

I was dual-booting Windows 7 and Linux Ubuntu on my desktop, and today is the day they gave out free Windows 10 upgrades. How exciting! I got the update, and it was installing, and I left to go take ...
73
votes
4answers
813k views

GRUB rescue problem after deleting Ubuntu partition! [duplicate]

After I deleted my Ubuntu partition, I rebooted my computer and I only get a prompt: grub rescue > The command ls lists (hd0) (hd0,msdos5) (hd0,msdos3) (hd0,msdos2) (hd0,msdos1) (hd1) (hd1,...
70
votes
13answers
10k views

How would a local government make the switch from Windows to Ubuntu?

I work in a municipal government where Windows is used throughout our institution. People use computers in our institution mainly for browsing the internet and using MS Excel or Word. I was thinking ...
68
votes
10answers
277k views

GRUB does not detect Windows

I have finally installed Ubuntu on my second drive. When I start my computer GRUB only offers me to boot Ubuntu, not Windows 7. What needs to be done so that I can choose between Ubuntu and Windows in ...
59
votes
11answers
74k views

Can't install Ubuntu 18.10 on XPS 15 - EFI\BOOT\mmx64.efi not found

I tried to install Ubuntu 18.10 on my XPS 15 9570 earlier. Everything was working fine until I got to the partition selection part of the installation. That's when the installer crashed and I had to ...
59
votes
6answers
350k views

Grub rescue - error: unknown filesystem

I have a multiboot system set up. The system has three drives. Multiboot is configured with Windows XP, Windows 7, and Ubuntu - all on the first drive. I had a lot of unpartitioned space left on the ...
57
votes
1answer
105k views

Dual boot Surface Pro with Ubuntu?

How could I setup a dual boot for Ubuntu and Windows 8 on my Microsoft Surface Pro with 128 GB. Note: My dual boot solution is below.
45
votes
17answers
189k views

How do I hide the GRUB menu showing up at the beginning of boot?

I stopped dual booting and I don't want to have to choose the OS any more. I want to boot into Ubuntu 12.04 directly without seeing the GRUB menu. How can I achieve that?
44
votes
1answer
34k views

How can I dual boot Windows and Ubuntu?

I currently have Windows 7 on my computer and I want to install Ubuntu alongside Windows safely. Could someone please provide clear instructions?
40
votes
3answers
8k views

Is Ubuntu destroying my internal HDD?

I have an Inspiron 3521 that came pre-installed with Windows 8.1. I decided to dual-boot Windows and Ubuntu, and it was working good. But, when using Ubuntu, I heard a lot of noise from my laptop ...
37
votes
3answers
224k views

Dual Boot Windows 10 and Linux Ubuntu on Separate Hard Drives [duplicate]

How would I go about dual booting Windows 10 and Ubuntu, the windows drive is on an ssd as my c drive and my s drive is a hdd that I want to use for Linux. I have no idea what I need to download it or ...
37
votes
6answers
61k views

A common /home partition for multiple Linux distributions

I have an Ubuntu installed in one partition, Debian on the other and now I am planning to install backtrack and SUSE also. Debian mounts a separate partition as its home mount point, whereas Ubuntu ...
37
votes
7answers
84k views

Windows 8 removes Grub as default boot manager

I have a Sony VAIO S series with Windows 8 preinstalled, and I installed Ubuntu 12.10 on a new partition. When the PC boots Grub is display, and I can choose between Windows 8 (didn't worked at the ...
36
votes
8answers
90k views

Should I choose exFat or NTFS for a “shared” partition in a dual-boot system?

I have a new laptop which I am setting up as dual boot Windows/Linux. I would like to access files from both Ubuntu and Windows 7. Should I create a separate NTFS partition?
35
votes
8answers
125k views

How can I reinstall GRUB to the EFI partition?

I want to reinstall GRUB 2 and I found these instructions: How to Repair, Restore, or Reinstall Grub 2 with a Ubuntu Live CD or USB. In my case, the boot loader is installed in the EFI partition. If I ...
35
votes
8answers
51k views

How to reboot into Windows from Ubuntu?

I'm looking for a way to reboot into Windows from Ubuntu on a 10.10/Vista dual boot system. The specific use case is that I would like to be able to ssh into my running Ubuntu instance and issue a ...
34
votes
5answers
38k views

Automatically mount NTFS drive when I login

I use Ubuntu 11.10 and Windows7 dual boot with Ubuntu as my primary OS. Every time I need to access a document I need to mount the respective drive, though this is not at all tiresome, still, is ...
33
votes
6answers
77k views

How to change the time for OS selection menu in GRUB?

I have Windows 7 and Ubuntu 12.04 in my system and i saw that the default time for os selection menu is only 10 sec, as i am new to Linux can anyone tell me how to increase this time?
33
votes
12answers
94k views

Hide GRUB2 menu UNLESS you hold down Shift key: how to make this happen?

I have a Ubuntu - Windows 7 dual-boot set-up, and I would like to have it that my laptop would boot up Windows 7 unless I press down the Shift key right after boot and bring up the Grub2 menu from ...
33
votes
2answers
181k views

Where to install bootloader when installing Ubuntu as secondary OS?

I'm trying to install Ubuntu as secondary OS on my laptop. I have Windows 8 already installed on my laptop. Now, I know how to run Ubuntu from USB drive, I created addition partition and formatted it ...
32
votes
4answers
126k views

My main username is not in the sudoers file

I was trying to install some software/edit files with my main username(not root) But I got this error [X] is not in the sudoers file. This incident will be reported. I tried to edit the /etc/sudoers ...
31
votes
6answers
214k views

Add Windows 10 to GRUB OS list

I recently got a computer from school. It came with Windows 8.1 installed. I then installed another copy of Windows 8.1 (so it would use the built-in Windows Pro license) and upgraded it to Windows 10....
31
votes
6answers
281k views

How to install Windows 7 after Ubuntu and dual boot? [duplicate]

I just installed Ubuntu, a full install removing the prior OS. I was forced to remove Windows 7 from my HP dv6 because of the max four partitions already being there. I didn't lose anything, all ...
31
votes
3answers
38k views

Windows 10 changes UEFI boot order every time

I have an HP 500-413nl (a desktop) and Windows 10 keeps changing the boot order in UEFI/BIOS every time, so that if I want to boot Ubuntu 16.10 (64-bit) I always have to press F10, thus entering the ...
30
votes
1answer
24k views

Why was I asked to create a password in order to disable secure boot on initial installation of Ubuntu 16.04?

On initial installation of Ubuntu 16.04, I checked off "Install third-party software" and, underneath it, I was prompted to check off another option which would allow the OS package to automatically ...
29
votes
18answers
128k views

How do I get my HP laptop to boot into grub from my new efi file?

I have an HP Pavilion Sleekbook 14 laptop that I have installed Ubuntu 12.10 dual boot with the original windows 8. I used boot-repair to get set up to boot into grub. My issue is that I have not ...
27
votes
4answers
71k views

How to fix “The destination is read-only” error on HDD partition

How to fix The destination is read-only error on HDD partition with Windows 8.1 dual boot? Error while copying to ntfs partition
27
votes
1answer
57k views

What is the difference between grubx64 and shimx64?

I'm new to Linux. I loaded Ubuntu on my Mac and I'm booting it with rEFInd. I see two choices: EFI\ubuntu\grubx64.efi EFI\ubuntu\shimx64.efi They both boot into Ubuntu. What's the difference ...
27
votes
2answers
75k views

Windows Ubuntu dual boot - Share files between OS

Well I have a netbook, so I can't play games on windows either, no problem. But I'm getting a new desktop PC with better hadware and it will be able to run the most popular games and I want to have ...
27
votes
4answers
77k views

Deciding between virtual machine or dual-boot setup

I would like to set-up a PC to run ubuntu most of the time, but also need to run XP for specific applications and testing. In the past I would have simply set up a dual boot machine and then restart ...
27
votes
4answers
100k views

Ubuntu won't boot because of lvmetad

I've followed this tutorial to install Ubuntu 15.10: https://thesimplecomputer.info/full-disk-encryption-with-ubuntu After restarting my computer I got to the grub menu and chose Ubuntu. Shortly ...
26
votes
9answers
50k views

How do I scan my windows partition for viruses from Ubuntu?

I think I might have a virus on my windows partition and I want to scan it from Ubuntu. Is this possible? I would like a program that is free. clamAV I tried clamAV but I couldn't find a setting ...
26
votes
1answer
31k views

Any downside to using rEFInd instead of GRUB?

FINAL EDIT - If you are planning on installing rEFInd you might want to read Rod's answer below. After installing if you have a bunch of useless entries just write down their name on a piece of paper ...
26
votes
7answers
116k views

Grub does not show a Windows 8 option after dual boot

So, I've successfully dual-booted my Windows 8 machine with Ubuntu 12.04 . However, I still don't have a convenient method of choosing what OS to load at boot time. After installing Ubuntu, my ...
26
votes
8answers
195k views

How to set Windows bootloader as default bootloader?

I have a Win 7/11.10 dual boot system with Grub 2 as the default bootloader. However, I want to make Windows bootloader the default bootloader (grub 'dos' like interface scrares the hell out of my ...
25
votes
4answers
6k views

Windows 10 update ruined my GRUB menu

After being forced by Windows to select 'update and shut down'; Windows killed my GRUB menu. I used to have Fedora installed but I removed Fedora and installed Kubuntu some time ago. Suddenly, after ...
25
votes
4answers
160k views

Grub not showing on startup for Windows 8.1 Ubuntu 13.10 Dual boot

Ok, so I'm such a newbie to Ubuntu and I bought a Windows 8 pre-installed laptop last month. I updated to Windows 8.1 and then I thought about installing Ubuntu as a dual boot so I could mess around ...
24
votes
3answers
15k views

In a dual boot system, how does the BIOS choose which bootloader to run?

I have a dual boot of Windows and Ubuntu. When I switch on the machine, the BIOS does POST and after that the bootloader starts. I want to understand how the BIOS chooses which bootloader to run. I ...
24
votes
3answers
41k views

Is a /boot partition necessary anymore?

A fair while ago (~ 2004) I was told to always create a separate partition for the boot directory. And since then I always have. But after reading a few questions about partitioning questions, I'm ...
23
votes
9answers
8k views

Install Ubuntu without making Windows license void

I have a dell laptop with a pre-installed version of Windows 7 home premium. I want to dual boot my system to run both Ubuntu and Windows 7. The engineer told me I cannot do this without removing ...